Adenovirus-Vectored Drug-Vaccine Duo as a Rapid- Response Tool for Conferring Seamless Protection against Influenza.

Few other diseases exert such a huge toll of suffering as influenza. We report here that intranasal (i.n.) administration of E1/ E3-defective (DE1E3) adenovirus serotype 5 (Ad5) particles rapidly induced an anti-influenza state as a means of prophylactic therapy which persisted for several weeks in mice. By encoding an influenza virus (IFV) hemagglutinin (HA) HA1 domain, an Ad5-HA1 vector conferred rapid protection as a prophylactic drug followed by elicitation of sustained protective immunity as a vaccine for inducing seamless protection against influenza as a drug-vaccine duo (DVD) in a single package. Since Ad5 particles induce a complex web of host responses, which could arrest influenza by activating a specific arm of innate immunity to impede IFV growth in the airway, it is conceivable that this multi-pronged influenza DVD may escape the fate of drug resistance that impairs the current influenza drugs. [ABSTRACT FROM AUTHOR]